<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="http://at.alicdn.com/t/c/font_4144272_3vtq4renm6e.css">
  <title>Document</title>
</head>
<style>
  * {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
  }

  body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #222327;
  }

  .nav {
    width: 400px;
    height: 70px;
    padding: 0 25px;
    border-radius: 10px;
    background-color: #fff;
    position: relative;
    display: flex;
  }

  .nav li {
    width: 70px;
    height: 70px;
    z-index: 1;
    position: relative;
    list-style: none;
    cursor: pointer;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .nav li i {
    display: block;
    width: 70px;
    line-height: 70px;
    font-size: 24px;
    text-align: center;
    position: relative;
    transition: all 0.5s;
  }

  .nav li span {
    position: absolute;
    font-size: 12px;
    letter-spacing: 2px;
    transition: all 0.5s;
    opacity: 0;
    transform: translateX(20px);
  }
  .nav li.active i {
    transform: translateY(-35px);
    color: #fff;
  }
  .nav li.active span {
    opacity: 1;
    transform: translateY(10px);
  }
  .indicator {
    position: absolute;
    top: -50%;
    width: 70px;
    height: 70px;
    background-color: #2196f4;
    border-radius: 50%;
    transition: all 0.5s;
    border: 6px solid #222327;
  }
  .indicator::after {
    content: '';
    position: absolute;
    top: 50%;
    left: -22px;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border-top-right-radius: 20px;
    box-shadow: 1px -10px 0 0 #222327;
  }
  .indicator::before {
    content: '';
    position: absolute;
    top: 50%;
    right: -22px;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border-top-left-radius: 20px;
    box-shadow: -1px -8px 0 0 #222327;
  }
  li:nth-child(1).active~.indicator {
    transform: translateX(calc(70px * 0));
  }
  li:nth-child(2).active~.indicator {
    transform: translateX(calc(70px * 1));
  }
  li:nth-child(3).active~.indicator {
    transform: translateX(calc(70px * 2));
  }
  li:nth-child(4).active~.indicator {
    transform: translateX(calc(70px * 3));
  }
  li:nth-child(5).active~.indicator {
    transform: translateX(calc(70px * 4));
  }
</style>

<body>
  <ul class="nav">
    <li class="active"><i class="iconfont icon-home"></i><span>Home</span></li>
    <li><i class="iconfont icon-envelope"></i><span>Email</span></li>
    <li><i class="iconfont icon-comment"></i><span>Message</span></li>
    <li><i class="iconfont icon-heart"></i><span>Like</span></li>
    <li><i class="iconfont icon-user"></i><span>profile</span></li>
    <div class="indicator"></div>
  </ul>
  <script>
    const lis = document.querySelectorAll('.nav li')
    lis.forEach(li => {
      li.addEventListener('click', function () {
        lis.forEach(item => {
          item.classList.remove('active')
          this.classList.add('active')
        })
      })
    })
  </script>
</body>

</html>